Core of an electromagnet should have

by

1 Answer

Answer :

Core of an electromagnet should have low coercivity, high susceptibility.

by

Related questions

The attraction capacity of electromagnet will increase if the

Last Answer : Atrraction  capacity  will  increase  if  supply  current  is  increased.

The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and `150Am^(-1)` respectively. The

Description : The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and `150Am^(-1)` respectively. The

Last Answer : The magnetic induction and the intensity of magnetic field inside an iron core of an electromagnet are `1 Wbm^(-2)` and ... (5)/pi` D. `10^(5)/(5 pi)`

A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Description : A direct current passing through a wire coiled around a soft iron core is the description of a simple ____________. A. magnetic shield B. electromagnet C. piezoelectric device D. electromagnetic domain

Last Answer : Answer: B

What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field and a magnetic field at right angles to each other D. A wave consisting of two magnetic fields at right angles to each other

Description : What are electromagnetic waves? A. Alternating currents in the core of an electromagnet B. A wave consisting of two electric fields at right angles to each other C. A wave consisting of an electric field ... to each other D. A wave consisting of two magnetic fields at right angles to each other

Last Answer : C. A wave consisting of an electric field and a magnetic field at right angles to each other

What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each other. C. Alternating currents in the core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Description : What are electromagnetic waves? A. A wave consisting of two magnetic fields at right angles to each other B. A wave consisting of an electric field and a magnetic field at right angles to each ... core of an electromagnet D. A wave consisting of two electric fields at right angles to each other

Last Answer : B. A wave consisting of an electric field and a magnetic field at right angles to each other.

What is most suitable for the core of an electromagnet?

Description : What is most suitable for the core of an electromagnet?

Last Answer : Soft iron

1. What is most suitable for the core of an electromagnet? 2. What is common between Kutty, Shankar, Laxman and Sudhir Dar? 3. On which bast is the India’s wage policy? 4. Which is east of the Andaman and Nicobar Islands? 5. Who pioneered Khilafat Movement?

Description : 1. What is most suitable for the core of an electromagnet? 2. What is common between Kutty, Shankar, Laxman and Sudhir Dar? 3. On which bast is the India's wage policy? 4. Which is east of ... 19. Ankaleshwar and Navagaon are two oil fields in which state? 20. What was the capital of Hoyasals?

Last Answer : Answer : 1. Soft iron 2. Drawing Cartoons 3. Cost of living 4. Indonesia 5. Ali Brothers 6. Sand fly 7. 12 8. Lime stone 9. Padma 10. Khan Abdul Ghaffar Khan 11. Journalism 12. ... Bhikaiji Cama 16. 6 months 17. It forms erect, reduced images 18. Increasing steadily 19. Gujarat 20. Dwarasamudra

What happens to the strength of an electromagnet when the voltage in the coils of the solenoid is decreased?

Description : What happens to the strength of an electromagnet when the voltage in the coils of the solenoid is decreased?

Last Answer : The greater the current in the coil, the stronger the magnetic field will grow. Conversely, lowering the battery voltage decreases the current, weakening the field.

What is Ampere Pak ? What is the relationship between the polar energy of the electromagnet ?

Description : What is Ampere Pak ? What is the relationship between the polar energy of the electromagnet ?

Last Answer : The number of coils of the coil in the unit length of the electromagnetic marrow and the product of the current in the ampere unit is called ampere turn . The polar energy of an electromagnet is proportional to the ampere pound.

How to change the pole of an electromagnet ?

Description : How to change the pole of an electromagnet ?

Last Answer : The pole of an electromagnet can be changed by reversing the direction of current.

What Infrared rays are electromagnet waves that are longer than radio waves but shorter than visible light rays true of false?

Description : What Infrared rays are electromagnet waves that are longer than radio waves but shorter than visible light rays true of false?

Last Answer : Need answer

Is one of the major benefits of an electromagnet is that it can be turned on and off?

Description : Is one of the major benefits of an electromagnet is that it can be turned on and off?

Last Answer : Yes, the electricity can be turned on and off and so the magnetis on or off

How is an electromagnet different from a permeant magnet?

Description : How is an electromagnet different from a permeant magnet?

Last Answer : Mainly in that the electromagnet is NOT permanent. In otherwords, it can be switched on and off.Another relevant difference isthat the electromagnet constantly requires power, at least while itis on.

How is a magnetic force in an electromagnet created?

Description : How is a magnetic force in an electromagnet created?

Last Answer : An electromagnet uses electricity to create the magnetic field.Moving charges create magnetic fields. Knowing that, if we have alot of copper wire (with a suitable insulator) wrapped around aniron core ... around anail and connecting a battery to the ends of the wire will make asimple electromagnet.

What does The strength of an electromagnet depends on?

Description : What does The strength of an electromagnet depends on?

Last Answer : It depends on electrical current,the number of winding,and corematerials

In an electromagnet the magnetic forces increase as increases?

Description : In an electromagnet the magnetic forces increase as increases?

Last Answer : It increases as the current increases.

How does an electromagnet work in a headphone?

Description : How does an electromagnet work in a headphone?

Last Answer : What is the answer ?

What are four ways you can increase the strength of an electromagnet?

Description : What are four ways you can increase the strength of an electromagnet?

Last Answer : Need answer

In an electromagnet the magnetic forces increase as increases?

Description : In an electromagnet the magnetic forces increase as increases?

Last Answer : It increases as the current increases.

True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?

Description : True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?

Last Answer : FALSE

Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Description : Which of the following would be most suitable for making an electromagnet? (a) Copper (b) Tungsten (c) Soft iron (d) Steel

Last Answer : Ans:(c)

Electromagnet is constructed with which of the following? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Description : Electromagnet is constructed with which of the following? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Last Answer : (2) Soft Iron Explanation: An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. It is made of soft iron since it has the property of losing its magnetism very quickly.

The most common type of AC service generator found aboard ship is the stationary _____________. A. electromagnetic field, revolving armature type B. electromagnetic field, oscillatory armature type C. armature, oscillatory electromagnet field type D. armature, rotating electromagnetic field type

Description : The most common type of AC service generator found aboard ship is the stationary _____________. A. electromagnetic field, revolving armature type B. electromagnetic field, oscillatory armature type C. armature, oscillatory electromagnet field type D. armature, rotating electromagnetic field type

Last Answer : Answer: D

A molded-case circuit breaker provides protection against short circuits by using a/an ________________. A. electromagnet B. shading coil C. arc quencher D. burn away strip

Description : A molded-case circuit breaker provides protection against short circuits by using a/an ________________. A. electromagnet B. shading coil C. arc quencher D. burn away strip

Last Answer : Answer: A

A molded-case breaker provides protection against short circuits by using a/an ____________. A. shading coil B. arc quencher C. electromagnet D. holding coil

Description : A molded-case breaker provides protection against short circuits by using a/an ____________. A. shading coil B. arc quencher C. electromagnet D. holding coil

Last Answer : Answer: C

Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. This element consists of a ______________. A. cylindrical spring on the contact arm B. conical spring on the contact arm C. second bimetal element D. second electromagnet

Description : Where a thermal-acting breaker is required to be used in an area of unusually high, low, or constantly fluctuating temperatures, an ambient compensating element must be used. This element consists of ... arm B. conical spring on the contact arm C. second bimetal element D. second electromagnet

Last Answer : Answer: C

Which one of the following metals cannot be used as an electromagnet?

Description : Which one of the following metals cannot be used as an electromagnet?

Last Answer : Copper

Why is soft iron used as an electromagnet?

Description : Why is soft iron used as an electromagnet?

Last Answer : Ans: Because it remains magnetic only till the current passes through the coil and loses its magnetism when the current is switched off (principle of electric bells)

Induced current in coil by a magnet turns it into an A. straight wire B. magnet C. ammeter D. electromagnet

Description : Induced current in coil by a magnet turns it into an A. straight wire B. magnet C. ammeter D. electromagnet

Last Answer : electromagnet

Which one of the following metals cannot be used as an electromagnet?

Description : Which one of the following metals cannot be used as an electromagnet?

Last Answer : Copper

What do you call of an instrument that depends for its operation on the reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnet induction in movable conducting parts?

Description : What do you call of an instrument that depends for its operation on the reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnet induction in movable conducting parts?

Last Answer : induction instrument

Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Description : Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Last Answer : b.Bar magne

Solenoid is a specially designed ________ A. Actuator B. Machine C. Electromagnet D. none of above

Description : Solenoid is a specially designed ________ A. Actuator B. Machine C. Electromagnet D. none of above

Last Answer : C. Electromagnet  

Electromagnet is constructed with which of the following ? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Description : Electromagnet is constructed with which of the following ? (1) Steel (2) Soft Iron (3) Aluminium (4) Nickel

Last Answer : Soft Iron

State any two applications of electromagnet.

Description : State any two applications of electromagnet.

Last Answer : Applications of Electromagnet: Cranes, Motors, Generators, Transformers, Electromagnetic Relays, Circuit breakers, Traction, Measuring instruments, Electrical Bell etc.

What is permanent magnet and electromagnet?

Description : What is permanent magnet and electromagnet?

Last Answer : Permanent magnet: A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. As the name suggests, a permanent magnet is 'permanent'. ... an electric current passes through the coil. If the current is interrupted, the magnetism is lost.

Write one application of each: i) Permanent Magnet ii) Electromagnet

Description : Write one application of each: i) Permanent Magnet ii) Electromagnet 

Last Answer : i) Applications of Permanent Magnet: 1) Field of DC motors 2) Tacho-generators 3) In stepper motors. 4) Field of two wheeler and car dynamo 5) In magnetic therapy 6) ... Motors, Generators, Transformers, Electromagnetic Relays, Circuit breakers, Traction, Measuring instruments, Electrical Bell etc.

What happens when you reverse the direction of the current in an electromagnet?

Description : What happens when you reverse the direction of the current in an electromagnet?

Last Answer : When  you  reverse  current  direction  in  an  electromagnet,  the magnetic  poles  will  also  change.

Ferromagnets

Description : Ferromagnets

Last Answer : Ferromagnets Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ... licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

Temporary magnets are used in

Last Answer : Temporary magnets are used in loud-speakers,generators, motors.

Main causes of noisy solenoid are

Last Answer : Main causes of noisy solenoid are strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force, uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts.

Magnetism of a magnet can be destroyed by

Last Answer : Magnetism of a magnet can be destroyed by heating, hammering, by inductive action of another magnet.

The magnetic materials exhibit the property of magnetisation because of

Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.

The bar magnet has

Last Answer : The bar magnet has the dipole moment.

The stray line of magnetic flux is defined as

Last Answer : The stray line of magnetic flux is defined as a line of magnetic flux which does not follow the designed path.

How does the magnetic compass needle behave in a magnetic field ?

Last Answer : It assures a position which follows a line of magnetic flux

The initial permeability of an iron rod is

Last Answer : The initial permeability of an iron rod is the permeability almost in non-magnetised state.

The magnetic reluctance of a material

Last Answer : The magnetic reluctance of a material decreases with increasing cross-sectional area of the material.

The magneto-motive force is

Last Answer : The magneto-motive force is the sum of all currents embraced by one line of magnetic field.